[MTD] cfi_cmdset_0001: relax locking rules for multi hardware partition support

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 4 insertions, 6 deletions

diff --git a/drivers/mtd/chips/cfi_cmdset_0001.c b/drivers/mtd/chips/cfi_cmdset_0001.c
index 143f01a4c170..69c04945591f 100644
--- a/drivers/mtd/chips/cfi_cmdset_0001.c
+++ b/drivers/mtd/chips/cfi_cmdset_0001.c
@@ -4,7 +4,7 @@
  *
  * (C) 2000 Red Hat. GPL'd
  *
- * $Id: cfi_cmdset_0001.c,v 1.185 2005/11/07 11:14:22 gleixner Exp $
+ * $Id: cfi_cmdset_0001.c,v 1.186 2005/11/23 22:07:52 nico Exp $
  *
  *
  * 10/10/2000   Nicolas Pitre <nico@cam.org>
@@ -644,9 +644,8 @@ static int get_chip(struct map_info *map, struct flchip *chip, unsigned long adr
                  *
                  * - contension arbitration is handled in the owner's context.
                  *
-                 * The 'shared' struct can be read when its lock is taken.
-                 * However any writes to it can only be made when the current
-                 * owner's lock is also held.
+                 * The 'shared' struct can be read and/or written only when
+                 * its lock is taken.
                  */
                 struct flchip_shared *shared = chip->priv;
                 struct flchip *contender;
@@ -675,14 +674,13 @@ static int get_chip(struct map_info *map, struct flchip *chip, unsigned long adr
                         }
                         timeo = jiffies + HZ;
                         spin_lock(&shared->lock);
+                        spin_unlock(contender->mutex);
                 }
 
                 /* We now own it */
                 shared->writing = chip;
                 if (mode == FL_ERASING)
                         shared->erasing = chip;
-                if (contender && contender != chip)
-                        spin_unlock(contender->mutex);
                 spin_unlock(&shared->lock);
         }